Parallel straightedge



FIG. 1 is a top and right front perspective view of a parallel straightedge showing my new design;

FIG. 2 is a top plan view thereof, the bottom being flat, plain and unornamented;

FIG. 3 is a right side elevational view thereof, the left side being a mirror image thereto;

FIG. 4 is a front elevational view thereof, the rear being a mirror image thereto.

The broken-line showings of a drafting board in FIGS. 1-4 are environmental only and form no part of the claimed design. 

The ornamental design for a parallel straightedge, as shown and described. 